Good to know, Darryl! Thanks for posting, Kelly
> On Nov 6, 2017, at 3:18 PM, Darryl Thayer <[email protected]> wrote: > > Hi i was at a SMA lecture and they said the boards are replaceable, so > hopefully a perdon never has to replace the complete unit > > On Nov 6, 2017 10:08 AM, "Kelly Larson" <[email protected]> wrote: > >> …especially replacement! The inverter weighs in at 185 lbs, so >> replacement likely will require the use of a crane on multi-story flat >> roofs. >> >> I am in complete agreement with you that putting inverters on the roof is >> not ideal. Not only is servicing and replacement an issue, but there is no >> doubt that the inverter will run hotter sitting in the sun. But this is >> one way to satisfy the 2014 rapid shutdown requirements, so I assume we >> will be seeing more of it. Compared to other commercial roof rapid >> shutdown solutions that employ a contractor it seems important to consider >> rooftop inverters, as they provide potentially more reliable system >> operation in the long run. Maybe we should be looking at lower DC/AC >> ratios for these systems? >> >> I am still wondering if anyone on the list has installed these SMA Core1 >> inverters. >> >> Thanks for the comments! >> Kelly >> >> PS: I didn’t design or install the system, but am inspecting and >> commissioning it. >> >> >>> On Nov 2, 2017, at 2:30 PM, William Miller <[email protected]> >> wrote: >>> >>> Kelly: >>> >>> I see one problem: the inverter on the roof. Makes servicing and >>> replacement a real pain. >>> >>> William >>> >>> >>> >>> Lic 773985 >>> millersolar.com >>> 805-438-5600 >>> >>> >>> -----Original Message----- >>> From: RE-wrenches [mailto:[email protected]] On >>> Behalf Of Kelly Larson >>> Sent: Thursday, November 02, 2017 12:36 PM >>> To: [email protected] >>> Subject: [RE-wrenches] SMA Core 1 Inverter >>> >>> Dear estemed Wrenches, >>> >>> I will be inspecting a system with SMA’s new Core 1 inverters and am >>> wondering: What experience do you have with this inverter? >>> >>> I think it is the first inverter made to sit freestanding on a commercial >>> roof. It looks like it has some super interesting features, including >>> “String Failure Detection”. (Why is this feature deactivated by >> default?) >>> >>> I’m not sure how well it will satisfy the rapid shutdown requirement when >>> the roof array areas are broken up, but on one with a contiguous array >> area, >>> it looks like it’ll work for the 2014 NEC. >>> >>> Any bugs or issues I should know about? >>> >>> Thanks in advanced for your replies! >>> >>> Blessings, >>> Kelly >>> >>> >>> ~~~~~ >>> Kelly Larson >>> 707-223-3209 >>> >>> Box 504 >>> Ukiah, CA 95482 >>> Electrical Engineer >>> NABCEP Certified Solar PV Installation Professional IREC Certified Master >>> Trainer for Photovoltaic Installer CA Electrical Contractor# 868189 >>> SolarKelly.com >>> >>> "Whatever you can do or dream you can, begin it. Boldness has genius, >> power >>> and magic in it." -- Goethe >>> >>> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: http://www.mail-archive.com/[email protected]. >> org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
